– See: Total Hip Replacement Menu – Discussion: – design considerations – femoral stem collar – cemented femoral stems (radiology of cemented femoral stems) – press fit femoral stems – femoral component offset – modular neck: – … Read more
– Discussion: – see acetabular component, reestablishment of acetabular floor, and component position; – see: preoperative and post operative radiographic eval – femoral offset is measured from the distance between the center of the femoral head and a line drawn down center of femoral shaft; – note that increasing … Read more
– Discussion: – two sites have been proposed for nail entry: – tip of the greater trochanter and the piriformis fossa; – Entry thru Piriformis Fossa; – main advantage a colinear trajectory with the long axis of the femoral shaft – accurate positioning of the entrace hole is critical. … Read more
– See: adult femoral and acetabular anteversion – Discussion: – femoral version is defined as the angular difference between axis of femoral neck and transcondylar axis of the knee; – excessive femoral anteversion (medial femoral torsion) is most common cause of in-toeing that first presents in early childhood; – … Read more
– Discussion: – femoral version is defined as the angular difference between axis of femoral neck and the transcondylar axis of the knee; – excessive femoral anteversion (medial femoral torsion) is most common cause of in-toeing that first presents in early childhood; – it is twice as common in girls as … Read more
– Discussion: – FES results when embolic marrow fat macroglobules damage small vessel perfusion leading to endothelial damage in pulmonary capillary beds leading to respiratory failure and ARDS like picture; – ref: Early-Onset Fat Embolism Syndrome. A Case Report – risk factors for FES: – … Read more
– Anatomy: – external rotators of thigh include (from superior to inferior) – Piriformis – conjoined tendons: – Gemellus Superior – Obturator Internus … Read more
– Location of Pin Insertion Sites: – depending on type of frame used, at least two or three pins are placed along iliac wing; – 1st pin is usually placed about 2 cm posterior to anterosuperior spine. – rest of pins should then be placed along iliac crest using … Read more
– See: Forearm Extensors : – Anatomy: – origin: lateral condyle of humerus; – insertion: – this tendon inserts into the base of 3rd metacarpal and is in direct relationship with the ECRL, which inserts into the base of the 3rd metacarpal; … Read more
– Discussion: – in elderly pts w/ comminuted frx, excision of up to 50% of olecranon can be well tolerated (no instability) – if distal surface of semilunar notch of ulna & coronoid are not injured upto 80% of olecranon may be excised w/o producing instability; – … Read more